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单词 gray
释义

gray1

adjective
US spelling of grey.

Rhymes

gray2

/ɡreɪ /
(abbreviation Gy)
noun Physics
The SI unit of the absorbed dose of ionizing radiation, corresponding to one joule per kilogram.The sievert is numerically equivalent to the gray for electrons and for X-rays irradiating the whole body....
  • Radiation doses are measured in rads or grays, where 1 gray equals 100 rads.
  • Thus for these particular radiations the dose equivalent in sieverts is numerically equal to the absorbed dose in grays.

Origin

1970s: named after Louis H. Gray (1905–65), English radiobiologist.

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更新时间:2024/11/12 8:26:04